Get your Fitbit data inside Apple Health on iPhone: steps, sleep, heart rate, workouts, calories — plus historical import.
Fitbit can’t connect to Apple Health directly. Use a sync bridge.
Direct answer + how syncing works.
What features matter (and why).
Move / import data into Apple Health.
Apple Fitness rings are driven primarily by Apple Watch and Apple Fitness rules. Syncing Fitbit data into Apple Health generally won’t close rings — but it can preserve your health history and metrics inside Apple Health.